Have you ever wondered why a magnifying glass distorts your reflection? Mrs. Pope and the Chip Kids discover how to bend light like engineers.
Explore how engineers “bend light” to make computer chips! Photolithography is a process used to put a specific pattern on a chip before etching. Photo means light and lithography means printing, so in photolithography you are printing with light. It is easy to see how this process works with a pair scissors, a paper plate, and flashlight. Engineers use a special mask, which is like a stencil with some dark areas and clear areas, to properly print a pattern onto the chip. The light shines only through the clear areas of the mask onto a wafer or chip
Vocabulary for Students to Define: Photolithography, Photo Resist, Convex, Refraction, Etching, Mask, Semiconductor, Microchip
Teacher Guide for Lesson & Experiment
Student Handouts
